Atomic, I was able to see 25 artists at Hopscotch, and could have easily seen more. 
Was that 25 full sets or was that a bunch of set-splitting?  
Full sets.  Anywhere from 20 minutes to an hour.  Some artists had more time, some less (probably a 40 minute average).  I think the amount of time I was watching music was around 18 to 20 hours (5 hours of fest time a day for three nights, plus two days of 5 hour day parties, minus time that i hung out and ate/traveling between venues...)
It was more than worth the money.  I loved it more than Lollapalooza, Bonnaroo, or V Fest.  The only fest that I have enjoyed more was ScapeScape; but that probably wont be beat for me due to location, artists booked, and price.   
Azaghal1981, I am unlikely to attend this year.  I already have one trip planned for April, and want to plan a vacation for later in the year as well... I don't know if planning to attend Hopscotch is what I should be doing.  There is a tiny chance I go, but it would involve some things I think we might have discussed, happening.